Sony KD-55X7 E Series - +5 V Power Failure Analysis - HDMI2 General Checking

3.7.3 +5V Power Failure Analysis – HDMI2 General Checking
59
+5V Power
Failure Analysis
Check impedance of
Varistor during AC OFF
HDMI2: VR4011
[OK] Impedance ≈ Open (High
Z)
[NG] Impedance ≠ Open (High Z)
END
Go to
“HPD Power Failure Analysis“
Page
Replace Broken Varistor
and Re-verify
[OK] Picture recovered
Checking condition:
- TV ON & HDMI Source ON except if the flow mentioned is AC OFF.
- TV HDMI input connected to HDMI source (Player etc.)
- TV Input Selection: HDMI
[NG] No picture
Check impedance of
Resistor during AC OFF
HDMI2: R4044
[NG] Impedance ≠ 22 Ω
[OK] Impedance ≈ 22 Ω
Replace Broken Resistor
and Re-verify
[NG] No picture
[OK] Picture recovered
59